Method of and apparatus for preparing slivers



Nov. 22, 1938. H. cuss 0 METHOD OF AND APPARATUS FOR PREPARING SLIVERSFiled Nov. 3. 1937 Y Patented Nov. 22,

men or AND APPARATUS-FDR- PREPARING SLIVEBS Heinrich Giol,

Ger."

Kamnierei,

many, assignor to Bremer Woii Blumenthai (Unterweser), GermanyApplication November 1937, Serial No. 112,598 In Germany November 6,1936 Myinventiongelates to a method of, and to apparatus for, preparingslivers from a hank.

It is an object of my invention toprqvide a method resulting in a sliverwhich is practically,

- i or to a great extent, homogeneous, that is, of

throughout its cutting-means, so that each thread is' taken up diatelyafter it has been under thistension imme completely severed. v

Instead of cutting each thread individually, I may cut the threads in,groups or layers and take up each group or. layer under tension in themanner discribed f In this manner, the operation of cutting the completehank is subdivided into as many individual cuts as there are threads, orgroups or layers of threads, inthe hank, and-each thread, group, orlayer is taken up. The take-up pulls 7 the threads, etc., away from thehank as soon as 25 they have been severed, and combines them into asliver.

-It is another object of my invention to provide a method or 'the kinddescribed in which the end of the hank, after having been tedand before30 it is cut, is united with the sliver already partly formed. and takenup with the sliver alter having been severed.

To this endyI feed the hankas described,-interrupt the feed, .cutthe'threads of'the hank;

35 take upthe cut threads, interrupt the takingup before all of the cutthreads have been taken up, restart the ieed,depoit the led end of theshank on the thread residue remaining after the taking-up has beeninterrupted, and restart the 40 cutting and the taking-up operations onthe fed end of the shank and the thread residue.

It is another object of my invention to provide suitable apparatus-forperforming the aforesaid methods. 45 To this end, I have designed themachines which have been illustrated by way of example in theaccompanying drawing'in which Fig. 1 is a diagrammatic elevation of amachine with a pair 'of cylinders as the take-up 50 means,

Fig. 2 is a similar elevation of a machine with two sets oil-needle barsas the take-up means,

Fig. 3 shows the machine illustrated in Fig. 2 V equipped with .areciprocating and oscillatin support for the fed end of the bank, and

is Claims. (01. 19-150) Fig. 4 shows the same machine with atransversely reciprocating plate instead of the supp rt.

Referring now to the drawing, and first to Fig.

1, a is the bank from which the slivers are pre- 6 pared, b and b are anupper and a lower feeding cylinder, and c is a feeding. table alongwhich the hank a is fed to the anvil d of a cutter equipped with areciprocating blade e for cutting the hank transversely to itsthickness. Means. 10 not shown but old in the art, may be provided forimparting oscillating or similar movement to the blade e while it cutsthe threads of the hank a.

, Arranged at the rear of the cutter d, e is a take-up table I with apair of taking-up'cylinders 4 d, 0 'Means may be provided for slightlyelevatingthe upper take-up cylinder 9' for a purpose which will beexplained with reference to Figs. 3 and 4. The taking-up cylinders maybe fluted as shown, or they may be plain, hened,

or knurled, or equipped with needles. The cylinders may be built up fromdisk-shaped elements arranged at right angles, or at some other angle,

to the axis oi the corresponding cylinder. The

rear end of the table I is curved in upward direction toward the gapbetween two delivery cylinders h and h. i n

In operation, the feeding cylinders b, b are rotated to feed the hank athrough between the anvii d and the bladee onto the take-up table 1 tora distance F irom the rear end of the anvil cl. The feeding cylindersare then stopped and the blade 'e' descends to out the threads of thefed hank end a. The distance F is so determined that the rear end of thefed hank portion a projects beyond the taking-upcylinders a and a. Thetaking-up cylinders are normally'pitched apart for a distancesubstantially equal to the thickness of the hank so that the end itpasses freely between them. The cylinders are now 4 moved nearertogether, or the upper cylinder 9- is lowered towardthe lower one a. sothat some pressure is exerted on the threads of theend a, and thetaking-up cylinders are rotated while the blade e descends. In thismanner the threads are under tension while being severed, and eachcompletely severed thread is immediately taken up and moved to the rearby the cylinders I, 0'. The topmost thread I of the hank end a leads andthe other threads follow in stepped relation.- V

as shown for the two subsequently cut threads II and III. The threadsare iinaliy engaged by the delivery cylinders h and kg and united toform a sliver by means known in the art and not illustrated.

When all threads of the hank have been cut, taken up and delivered, thetaking-up and delivery cylinders are stopped, the taking-up cylindersare moved apart, or the upper cylinder a is elevated, the blade e ismoved clear of its anvil d, and the feeding cylinders b, b are rotatedto feed the hank for another distance F. The machine is now'ready forthe next cycle.

Referring now to Fig. 2, this machine is similar to the machine in Fig.1 and is only distinguished from it by the arrangement of an upper set iof needle bars, and a lower set 7" of needle bars, instead of thetaking-up cylinders g and g. The needles engage, and take up, thethreads as they are cut by the blade e, in a manner similar to theoperation'of the taking-up cylinders g, y. In addition to the taking-upmovement of the needles, they comb and separate the threads.

The sets of needles-instead of which a single set may be provided ifdesired-may be adjustable so as to vary their distance from the anvil d,and a similar arrangement might obviously be provided for the taking-upcylinders g and g. Any number of needle-bar sets, or of pairs oftakingup cylinders, may be arranged in series. l

Instead of uniting the threads to form a continuous sliver after theyhave moved past the delivery cylinders h, h, as described, it ispreferred to unite part of the threads which have been cut but have notyet been taken up, with the threads of the end of the hank which is fedfor the subsequent cutting operation. This is eflected by stopping thetaking-up cylinders 17, g, or the needle bars, or bar,i and i before allof the cut threads on the take-up table I have been taken up, anddepositing the newly fed end a of the bank a on the thread residue, sothat the residual threads and the threads of the fresh end are taken uptogether and form a continuous sliver.

Means designed for the uniting operation just detailed, have beenillustrated in Figs, 3 and 4 in combination with the machine illustratedin Fig. 2, but it is understood that such means might also be combinedwith a machine having the takins-up cylinders 17 and instead of theneedle bar sets 1 and t.

Referring now to Fig. 8, a movable support It is provided for the end aof the bank, and mounted toslide on, and to oscillate about, a roller 1on the anvil d. X

The operation of this support is as follows:

When the taking-up means a, a or i, i are stopped, a residue of threadis still present on the take-up table I. The feeding cylinders b, b arenow operated and feed the end a of the hank a for the distance 1''. Thesupport I: is normally in its initial position as shown in full lines inwhich it is inclined upwardly. When the feeding cylinders b and I)start, the support It is at the same time shifted into the position k inwhich it is inclined at the same angle as before but its rear end is nowabove the take-up table I and holds the end a above the thread residueon the take-up table I. From this position, it is oscillated about theroller 1 and into the substantially horizontal position It", and finallyretracted into its initial or full-lines position, leaving the end a onthe thread residue on the takeup table 1. The taking-up means i, i'--orthe cylindersa. fl'-are now operated and take up tOIether the residueand the fresh threads. Preferably, in order to facilitate theintroduction of the end a between the taking-up means. the uppercylinder or the first needle bar in the upper set i, is slightlyelevated until the end has passed below it.

Referring now to Fig. 4, the shiftable and oscillating support In isreplaced by a plate m which is only shiftable transversely andinsubstantial-'- ly horizontal position. It is advanced when the end astarts for its feeding movement, an intermediate stage of which isillustrated in Fig. 4, and holds the end a above the thread residuestill on the take-up table until the feeding movement has beencompleted. After the completion of the feeding movement,'the plate m isretracted and the hank'end a and the residual threads are taken uptogether, as described with reference to Fig. 3.-

Any suitable mechanism, not shown, may be provided for operating thesupport It, or the plate m. For instance, a pin is arranged at asuitable point of the support is and is moved about a cam plate, orthrough a cam slot, for moving the support into its several positions,and similar means may be employed for advancing and retracting v theplate m.

The sets of needle bars 1, i, or the taking-up cylinders a, a, ifequipped withneedles, maybe arranged to oscillate so that their needlescan enter between the threads of the hank end a and separate and combthem before the cutter d, e is started to operate, in order to produce amore open structure of the silver.

It is. also possible to provide an extra set of needle cylinders, ,or ofneedle bars, for combing the threads, and another set for taking up thethreads in the manner described.

It is. understood that the term threads" as used in the specificationand the claims includes any elements making up the hank a, such asstrands or fibers.

I claim:

1. The method of preparing continuous slivers from a hank,- comprisingfeeding the hank, interrupting the feed, cutting the threads .of thehank, taking up the threads during the cutting operation,interrupting'the taking-up before all of the cut threads have been takenup, restarting the feed, depositing the fed end of the hank on thethread residue remaining after the takingup has been interrupted, andrestarting the cutting and the taking-up operations.

2. In a machine for preparing slivers from a hank, cutting meansarranged to cut transversely to the thickness of the hank, means forfeeding the hank to the butting means, and taking-up means arranged atthe rear of the cutting means for exerting tension ,on each thread whileit is being severed during the cutting operation and taking up eachthread immediately after it has been severed.

3. In a machine'for preparing slivers from a bank, cutting meansarranged to cut transversely to the thickness of the hank, means forfeeding the hank to the cutting means, and taking-up means arranged'atthe rear of the cutting means at a distance which is shorter than thedistance through which the hank is fed, for exerting tension on eachthread while it is being severed during the cutting operation and takingup each thread immediately after it has been severed.

4. In a machine for preparing slivers from}; bank, cutting meansarranged to cut transversely to the thickness of the hank, means forfeeding it is being? severed during the cutting operation 7 immediatelyafter means for exerting tension on each thread while it is beingsevered during the cutting operation and taking up each threadimmediately after it has been severed.

6. In a machine for preparing slivers from a hank, cutting meansarranged to cut transversely to the thickness oi the hank, means forfeeding the hank to the cutting means, and a pair of sets of needle barsarranged at the rear of the cutting means for exerting tension on eachthread while it is being severed during the cutting operation andtakingup each thread immediately after it has been severed.

7. In a machine for preparing slivers from a hank, cutting meansarranged to cut transversely to the thickness of the hank, means forfeeding the hank to the cutting means, and a set of needle bars arrangedat the rear of the cutting means for exerting tension oneach threadwhile it is beingsevered during the cutting operation and taking upefih' thread immediately after it has been severed.

8. In a machine for preparing slivers from a hank, cutting means, meansfor feeding the hank to the cutting means, means arranged at the rear ofthe cutting means for taking up part of the threads during the cuttingoperation, and means for first keeping the fed end or the hank awayfrom, and then depositing it on, the threads which have not been takenup.

0. In a machine for preparing slivers from a hank, cutting means, meansfor ieeding the hank to the cutting means, means arranged at the rear ofthe cutting means for taking up part of the threads during the cuttingoperation, and reciprocating means for first keeping the fed end 01' thehank away from, and then depositing it on, the threads which have notbeen taken up.

10. In a machine for preparing slivers from a hank,cutting means, meansfor feeding the liank to the cutting means, means arranged at the rearof the cutting means for taking up' part of the threads during thecutting operation, and reciprocating and oscillating means for firstkeeping the fed end of the hank away from, and then depositing it on,.the threads which have not been taken up.

11. The method of preparing slivers from a hank, comprising feeding thehank, cutting its threads transversely to the thickness of the hank,

exerting tension on each thread while it is being severed, and taking upeach thread immediately after it has been severed.

12. The method of preparing slivers from a hank, comprising feeding thehank, cutting its threads transversely to the thickness of the hank,exerting tension on each thread while it is being severed, taking upeach thread immediately after it has been severed, and combing thethreads during the taking-up. I

13. The method of preparing slivers from a hank, comprising feeding thehank, cutting its threads transversely to the thickness of the hank,exerting tension on each thread while it is being severed, combing thethreads, and taking up each thread immediately after it has beensevered.

. HEINRICH GIES.

